Open AccessHigh aperture efficient slot antenna surrounded by the cavity and narrow corrugations at Ka‐band and Ku‐band
Author(s) -
Alkaraki Shaker,
Gao Yue,
Parini Clive
Publication year - 2018
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2018.0060
Subject(s) - aperture (computer memory) , optics , antenna aperture , antenna (radio) , ku band , antenna efficiency , antenna factor , radiation pattern , ka band , antenna gain , materials science , physics , electrical engineering , engineering , acoustics
A design criterion for a small, compact, high‐aperture‐efficient antenna is proposed in this study. The proposed criterion is validated experimentally through fabricating and testing two prototypes for Ku‐band and Ka‐band applications. The proposed antenna design consists of a resonance slot perforated in an aluminium plate and surrounded by a cavity and two corrugations. The proposed Ku‐band antenna has an aperture efficiency of 74.3% and a measured gain of 12.2 dBi at 13 GHz, while the Ka‐band antenna resonates at 28.5 GHz with a peak aperture efficiency of 78% and a gain of 12.9 dBi. The gain of both antennas is dramatically boosted by the radiation from the cavity and corrugations, resulting in a significant enhancement in the aperture efficiency.